EP0645903B2 - Burstfüllstruktur in einer digitalen TDMA zellularen Funkanordnung, und Basisstation, die diese Struktur aufbaut - Google Patents

Burstfüllstruktur in einer digitalen TDMA zellularen Funkanordnung, und Basisstation, die diese Struktur aufbaut Download PDF

Info

Publication number
EP0645903B2
EP0645903B2 EP94402160A EP94402160A EP0645903B2 EP 0645903 B2 EP0645903 B2 EP 0645903B2 EP 94402160 A EP94402160 A EP 94402160A EP 94402160 A EP94402160 A EP 94402160A EP 0645903 B2 EP0645903 B2 EP 0645903B2
Authority
EP
European Patent Office
Prior art keywords
transmission
burst
filler
beacon
beacon frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94402160A
Other languages
English (en)
French (fr)
Other versions
EP0645903B1 (de
EP0645903A1 (de
Inventor
Marc Delprat
Frederic Gourgue
Eric Pequet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9451348&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0645903(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0645903A1 publication Critical patent/EP0645903A1/de
Publication of EP0645903B1 publication Critical patent/EP0645903B1/de
Application granted granted Critical
Publication of EP0645903B2 publication Critical patent/EP0645903B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst

Definitions

  • the present invention relates to a structure of burst filling in a cellular radio system using the principle of Time Division Multiple Access (TDMA, or TDMA in English). It also concerns a station basis of this system for the development of such a burst structure.
  • TDMA Time Division Multiple Access
  • each cell covering an area geographical area, is equipped with a transmitting / receiving station basic (simply called station base) serving as the interface between a mobile station found substantially within the geographical area that it covers and is the system management network another station mobile.
  • station base a transmitting / receiving station basic
  • each base station is associated at least a transmission frequency in the downstream direction (base station to mobile); a frequency of Corresponding transmission in the upstream direction corresponds at this downward frequency.
  • a frequency of Corresponding transmission in the upstream direction corresponds at this downward frequency.
  • each transmission frequency is subdivided into repeated frames in a periodic pattern.
  • Each frame itself is subdivided into intervals of time, a time interval of given rank repeated periodically constituting a transmission channel.
  • the transmission channels we find least one signaling channel or beacon, on which transmitted signaling messages, and traffic channels, for the transmission of useful data (speech or other).
  • the signaling channel corresponds to the first time interval of each frame on a particular transmission frequency called beacon frequency.
  • Beacon frequency is characteristic of the cell.
  • the rank of the first time interval is identified for example by the number 0 in systems conforming to the GSM standard, and by the number 1 in the systems in accordance with the future TETRA standard.
  • the signaling channel itself consists of several sub-channels, each sub-channel being equally repeated in a periodic pattern of its own.
  • beacon frequency can therefore be transmitted both signaling messages and data helpful.
  • several other frequencies of transmission can be used to meet the needs, that is to say to ensure the transmission of data helpful.
  • main beacon frequency and a beacon frequency auxiliary intended to ensure the transmission of messages signaling when the traffic is such that the frequency main beacon is no longer sufficient, and / or when, for security reasons, we do not want to transmit all signaling messages on the same frequency.
  • Signaling messages or useful data are transmitted on the adapted channels in the form of packets or bursts.
  • a mobile station When a mobile station, initially in eve, seeks to connect to the management network of the radiocommunication system, it must determine the beacon frequency of the cell in which it is then, because of the use of TDMA, synchronize with the base station of this cell to use then the correct channel, that is the time interval correct.
  • a mobile station located in a given cell must "listen" when it is inactive in broadcast and in reception and possibly if the signal received from the base station of the cell in which she is not a power or an error rate per bit (BER), the beacon frequencies of the cells to measure the power (or BER) of the signal received on these frequencies. It must also synchronize with neighboring cells, in order to prepare a eventual handover (handover in English) to the cell whose beacon frequency is received by example with a higher power level than the power level of the beacon frequency of the cell in which she is.
  • BER error rate per bit
  • the base station constantly emit on beacon frequency.
  • These filling bursts are emitted by the station basic, under the control of the network, as soon as a channel or that a time slot of a channel (subchannel) is unused on the main beacon frequency or, if appropriate, auxiliary.
  • the mobile station To synchronize with the base station of a determined cell, once the beacon frequency of this identified cell, the mobile station should search for a burst says synchronization.
  • the synchronization burst is transmitted according to a periodic repetition pattern on a subchannel of the beacon path.
  • the transmission period of the synchronization burst is about 0.04s; in a compliant system to the future TETRA standard, the transmission period the timing burst is about 1s.
  • the mobile station seeking to synchronize "listen” so at certain times, depending on the mode according to which it has been programmed, what is transmitted on the beacon frequency. During all this so-called synchronization acquisition period she can not send or receive signaling data or useful data to or from of the new cell.
  • the duration required at synchronization can therefore be important.
  • a communication recovery procedure eg a handover procedure in the systems compliant with the GSM standard
  • communication current can be interrupted as long as the synchronization is not acquired, the acquisition duration of the synchronization may be greater than 20s (in the case of the future TETRA standard).
  • the purpose of the present invention is to reduce the duration necessary to synchronize a mobile station.
  • the present invention proposes for this purpose a structure filling burst used in a system working digital radio cellular according to the principle of Multiple Access Distribution in time according to claim 1.
  • the invention thus makes it possible to repeat more often the information contained in the subchannel of synchronization. In this way, in all cases where filling bursts are required, the stations mobiles can sync faster than in the prior art.
  • the signaling message contained in the burst filling can thus contain information from synchronization for mobile stations located in or near a cell to which is associated with the beacon frequency on which it is sent, or both synchronization information to destination of mobile stations in or neighborhood of a cell with which the frequency is associated tag on which it is issued and other information signaling.
  • the synchronization information contained in the filling burst have a so-called recognizable learning sequence by the mobile station or stations to which they are intended.
  • auxiliary beacon When the system uses for the transmission of signaling messages, besides the beacon frequency previous, called main beacon frequency, a frequency auxiliary beacon, the filling bursts on auxiliary beacon frequency have the same structure as the filler bursts used on beacon frequency main.
  • the present invention provides according to claim 7, a method for transmitting messages of signaling.
  • the signaling messages issued on the way beacon comprise to stations already synchronized mobile information telling them that filling bursts emitted on the channels of beacon frequency that are not allocated to the transmission of useful data or on the intervals of unused signaling channel time for transmission signaling messages contain signaling data to acquire.
  • the present invention proposes according to the rev. 8 a traffic channel allocation method. It consists of frequencies other than Beacon frequency are available for traffic, to allocate in the first place traffic channels on these frequencies, in order to leave the traffic channels of free beacon frequency for the emission of bursts from filling according to the invention.
  • the present invention also relates to a station of a cellular radio system using the principle of the Time Division Multiple Access according to claim 9 having means for transmitting and receiving and a steering means, and such that, in response to a received order of radio resource management means the system indicating which of the beacon frequency are unused to transmit useful data and which time intervals the signaling channel are unused to transmit signaling messages, the means of control control of the means of elaboration of bursts having a structure according to the invention, these bursts being emitted by the transmission / reception means during the intervals of time corresponding to the channels of the frequency tag that is not allocated to data transmission useful or at the time intervals of the signaling channel unused for the transmission of messages signaling.
  • the control means can be programmed so that it controls the emission of filling bursts whose content is based on unallocated channels for the transmission of useful data or intervals unused signaling channel time.
  • the broadcast by means of transmission / reception, on the beacon track, of signaling messages including information indicating to mobile stations already synchronized which traffic channels are used to convey the filling bursts that may also contain signaling.
  • the invention finally relates to a management body radio resources of the radio system according to claim 12.
  • FIG. 1A shows a frame structure T carried by the beacon frequency of a cell C 1 (see FIG. 2) of a cellular system of digital radiocommunications.
  • the structure of the frame T has been described in part in the preamble.
  • the T frame is subdivided into eight time intervals.
  • Each time interval IT0 to IT7 has the duration of one or several bursts, depending on the type of burst it carries.
  • the time interval of rank 0 (IT0) is used to transmit the signaling messages consisting of one or more signaling bursts B S.
  • the other seven time intervals IT1 to IT7 are reserved for the transmission of useful data.
  • Each time interval, IT1 to IT7 thus constitutes a channel of traffic to be allocated to a mobile station when the latter must establish a communication.
  • three mobile stations M A , M B and M C are in communication under the coverage of the base station BTS 1 of the cell C 1 .
  • the channels corresponding respectively to the time slots IT1, IT4 and IT5 have been allocated to them.
  • Useful data in the form of normal traffic bursts B T are therefore transmitted during these time intervals.
  • the time slots IT2, IT3, IT6 and IT7 are not used for the transmission of useful data.
  • they are occupied by filling bursts B R , these bursts having a structure such that they contain no information for mobile stations, and can not be confused by them with any other type of burst.
  • FIG. 1B shows the structure of the modified frame T to give a structure T 'in which the time slots IT2, IT3, IT6 and IT7 contain filler bursts modified to contain signaling information. These filling bursts according to the invention are denoted B RS .
  • a mobile station M D lying under the coverage of the base station BTS 2 of a cell C 2 next to the cell C 1 must synchronize with the base station BTS 1 after having identified the beacon frequency, and if it has not detected the first burst B S carried by the time interval IT0, it is not necessary that it wait for 0.04s (GSM standard) the following interval IT0 (in a compliant system to the TETRA standard, it is recalled that the signaling channel has the rank number 1 and that the synchronization burst is repeated typically about every second).
  • GSM GSM standard
  • Time interval IT0 can locate the one transmitted on another time interval before the next time interval of rank 0.
  • the time during which the useful data are not transmitted that is to say the time required for synchronization, from 20s to less than 0.5s.
  • the time required for the acquisition of the synchronization is reduced, so that the risks of failure of current communication is lower.
  • the invention makes it possible to reduce the periods during which listening ("monitoring") of beacon frequencies of adjacent cells is necessary, which allows to reduce the consumption of mobile, to listen to more adjacent cells.
  • the structure of the Filling bursts may vary.
  • each burst filling contains a synchronization burst that the mobile station is able to easily locate thanks to its particular learning sequence.
  • the synchronization burst (BSCH) has a duration equal to half that of the allocated time interval, so that we can associate with the synchronization burst, in the filling burst according to the invention, another signaling burst, such as a burst information on the type of network to which belongs the concerned cell (BNCH).
  • another signaling burst such as a burst information on the type of network to which belongs the concerned cell (BNCH).
  • each filling burst contains a synchronization burst of the type BSCH and a separate signal burst; for example, the first filling burst available contains a synchronization burst and an information burst on the type of network (BNCH), the second a synchronization burst and a signaling burst for a station particular mobile, the third a synchronization burst and a signal burst for a group mobile stations, etc.
  • BNCH type of network
  • the transmission is thus dynamically managed signaling messages, and we therefore ensure better use of resources.
  • beacon frequency mentioned above and called main beacon frequency there may be besides the beacon frequency mentioned above and called main beacon frequency, one or more auxiliary beacon frequencies. It is of course that in all cases where there are several frequencies tags on which it is mandatory to broadcast permanently, the invention applies of the same way to each of them.
  • the control means L is controlled by an organ GRR radio resource management, located by example at the level of the BTS (but also to be at the network level, depending on the architecture chosen), this body indicating to the base station the ranks of beacon frequency traffic channels that do not are not allocated to the transmission of useful data, or those of the time slots of the signaling channel unused for the transmission of signaling messages, that is, the time intervals over which it is necessary to emit filling bursts.
  • the control means L of the base station is modified according to the invention for the latter to emit during these time intervals not bursts of classic fillers but filling bursts according to the invention.
  • the algorithm programmed within the control means L may also include, where appropriate, indications on the type of filling bursts to be emitted, according to the available time intervals and according to the signaling messages that we have chosen to transmit through filling bursts according to the invention.
  • control means L of the base station must be modified to order remission on the channel of signaling messages indicating to mobile stations already synchronized the ranks of time intervals other than the ITO they must listen on beacon frequency for more information signaling

Claims (12)

  1. Füll-Burst-Struktur, eingesetzt in
    einem zellularen digitalen Mobilfunknetz,
    das nach dem Prinzip des Mehrfachzugriffs im Zeitmultiplex (TDMA für "Time Division Multiple Access) arbeitet, wobei jede Zelle dieses Systems einer Markerfrequenz zugeordnet ist, welche in regelmäßig wiederholte Frames (T') unterteilt ist;
    und von denen jede mindestens einen Signalisierungskanal oder ein Markerband (ITO) für die Übertragung von Signalisierungsnachrichten (BS) aufweist, die einen für Mobilstationen bestimmten Synchronisations-Burst enthalten;
    wobei die anderen Kanäle (IT1, ... IT7) für die Übertragung von Nutzdaten (BT) bestimmt sind,
    wobei dieser Füll-Burst auf den Kanälen der Markerfrequenz gesendet wird, die nicht der Übertragung von Nutzdaten zugewiesen sind, dadurch gekennzeichnet, dass
    der Füll-Burst (BRS) enthält:
    den Synchronisations-Burst,
    welcher in mindestens einem der anderen Kanäle (IT2, IT3, IT6, IT7) wiederholt wird,
    der nicht der Übertragung von Nutzdaten zugewiesen ist.
  2. Füll-Burst-Struktur nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Füll-Burst (BRS) einen Synchronisations-Burst enthält,
    welcher in jedem der anderen Kanäle (IT2, IT3, IT6, IT7) wiederholt wird,
    der nicht der Übertragung von Nutzdaten zugewiesen ist.
  3. Füll-Burst-Struktur nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Synchronisations-Burst Synchronisierungsinformationen für Mobilstationen enthält, die sich in oder in der Nähe einer Zelle befinden, welcher die Markerfrequenz zugewiesen ist, auf der er gesendet wird.
  4. Füll-Burst-Struktur nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass dieser Füll-Burst gleichzeitig den Synchronisations-Burst enthält, der für Mobilstationen bestimmt ist, die sich in oder in der Nähe einer Zelle befinden, welcher die Markerfrequenz zugewiesen ist, auf der er gesendet wird, sowie andere Signalisierungsinformationen.
  5. Füll-Burst-Struktur nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der Synchronisations-Burst eine so genannte Lernsequenz aufweist, welche von der oder den Mobilstationen erkannt werden kann, für die sie bestimmt sind.
  6. Füll-Burst-Struktur nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass dann, wenn dieses System zur Übertragung der Signalisierungsnachrichten außer der Markerfrequenz, die als Haupt-Markerfrequenz bezeichnet wird, eine Hilfs-Markerfrequenz verwendet, die Füll-Bursts auf der Hilfs-Markerfrequenz dieselbe Struktur haben wie die Füll-Bursts, die auf der Haupt-Markerfrequenz verwendet werden.
  7. Verfahren zur Übertragung von Signalisierungsnachrichten an eine oder mehrere Mobilstationen, die sich innerhalb der Reichweite von Zellen eines zellularen digitalen Mobilfunksystems entwickeln, das nach dem Prinzip des Mehrfachzugriffs im Zeitmultiplex arbeitet und in dem jede Zelle dieses Systems einer Markerfrequenz zugewiesen ist, welche in regelmäßig wiederholte Frames unterteilt ist und von denen jede mindestens einen Signalisierungskanal oder ein Markerband für die Übertragung von Signalisierungsnachrichten an Mobilstationen aufweist, wobei die anderen Kanäle für die Übertragung von Nutzdaten bestimmt sind,
    dadurch gekennzeichnet, dass die auf dem Markerband gesendeten Signalisierungsnachrichten für die bereits synchronisierten Mobilstationen eine Information enthalten, die letzteren mitteilt, dass die Füll-Bursts, die auf den Kanälen dieser Markerfrequenz gesendet werden und die nicht der Übertragung von Nutzdaten zugewiesen sind, zu erfassende Signalisierungsdaten enthalten und eine Struktur nach einem der Ansprüche 1 bis 6 haben.
  8. Verfahren zur Zuweisung eines Verkehrskanals in einem zellularen digitalen Mobilfunksystem, das nach dem Prinzip des Mehrfachzugriffs im Zeitmultiplex arbeitet und in dem jede Zelle dieses Systems einer Markerfrequenz zugewiesen ist, welche in regelmäßig wiederholte Frames unterteilt ist und von denen jede mindestens einen Signalisierungskanal oder ein Markerband für die Übertragung von Signalisierungsnachrichten an Mobilstationen aufweist, wobei die anderen Kanäle, die so genannten Verkehrskanäle zur Übertragung von Nutzdaten bestimmt sind, wobei ein Füll-Burst auf den Kanälen der Markerfrequenz gesendet wird, die nicht der Übertragung von Nutzdaten zugewiesen sind,
    dadurch gekennzeichnet, dass es dann, wenn andere Frequenzen als die Markerfrequenz für den Verkehr verfügbar sind, darin besteht, an erster Stelle Verkehrskanäle auf diesen Frequenzen in der Weise zuzuweisen, dass die Verkehrskanäle der Markerfrequenz für das Senden von Füll-Bursts nach einem der Ansprüche 1 bis 6 frei bleiben.
  9. Basisstation (BTS1) eines zellularen digitalen Mobilfunksystem, das nach dem Prinzip des Mehrfachzugriffs im Zeitmultiplex arbeitet, wobei diese Station insbesondere Sende- und Empfangsvorrichtungen (E/R) und eine Steuervorrichtung (L) umfasst, dadurch gekennzeichnet, dass diese Steuervorrichtung (L) als Antwort auf einen von den Vorrichtungen zur Funkressourcenverwaltung (GRR) dieses Systems erhaltenen Befehl, der mitteilt, welche der Verkehrskanäle dieser Markerfrequenz nicht zum Übertragen von Nutzdaten genutzt werden und welche der Zeitintervalle dieses Signalisierungskanals nicht zum Übertragen von Signalisierungsnachrichten verwendet werden, Erzeugungsvorrichtungen (E) von Bursts steuert, welche eine Struktur nach einem der Ansprüche 1 bis 5 haben, wobei diese Füll-Bursts von den Sende-/Empfangsvorrichtungen (E/R) während der Zeitintervalle gesendet werden, welche den Kanälen der Markerfrequenz entsprechen, die nicht der Übertragung von Nutzdaten zugewiesen sind.
  10. Basisstation nach Anspruch 9, dadurch gekennzeichnet, dass die Steuervorrichtung so konzipiert ist, dass sie den Sendevorgang von Füll-Burts steuert, deren Inhalt von den nicht für die Übertragung genutzten Verkehrskanälen abhängt.
  11. Basisstation nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass die Steuervorrichtung so konzipiert ist, dass sie den Sendevorgang von Signalisierungsnachrichten über die Sende-/Empfangsvorrichtungen auf dem Markerkanal steuert, wobei die Signalisierungsnachrichten eine Information enthalten, die den bereits synchronisierten Mobilstationen mitteilt, welche Verkehrskanäle zum Übertragen dieser Füll-Bursts genutzt werden, die ebenfalls Signalisierungsnachrichten enthalten können.
  12. Organ zur Verwaltung von Funkressourcen für ein zellulares digitales Mobilfunksystem, das nach dem Prinzip des Mehrfachzugriffs im Zeitmultiplex (TDMA) arbeitet, ein System, in dem jeder Zelle eine in regelmäßig wiederholte Frames unterteilte Markerfrequenz zugewiesen ist und von denen jede mindestens einen Signalisierungskanal oder ein Markerband für die Übertragung von Signalisierungsnachrichten an Mobilstationen aufweist, wobei die anderen Kanäle, die so genannten Verkehrskanäle, zur Übertragung von Nutzdaten bestimmt sind, wobei ein Füll-Burst auf den Kanälen der Markerfrequenz gesendet wird, die nicht für die Übertragung von Nutzdaten zugewiesen sind,
    dadurch gekennzeichnet, dass dieses Organ zur Verwaltung der Funkressourcen Vorrichtungen aufweist, um festzustellen, ob andere Frequenzen als die Markerfrequenz für den Verkehr zur Verfügung stehen, und um an erster Stelle Verkehrskanäle auf diesen Frequenzen in der Weise zuzuweisen, dass die Verkehrskanäle der Markerfrequenz für das Senden von Füll-Bursts nach einem der Ansprüche 1 bis 6 frei bleiben.
EP94402160A 1993-09-29 1994-09-28 Burstfüllstruktur in einer digitalen TDMA zellularen Funkanordnung, und Basisstation, die diese Struktur aufbaut Expired - Lifetime EP0645903B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311572A FR2710805B1 (fr) 1993-09-29 1993-09-29 Structure de burst de remplissage dans un système cellulaire de radiocommunications numériques utilisant le principe de l'AMRT, et station de base pour l'élaboration d'une telle structure.
FR9311572 1993-09-29

Publications (3)

Publication Number Publication Date
EP0645903A1 EP0645903A1 (de) 1995-03-29
EP0645903B1 EP0645903B1 (de) 1998-11-11
EP0645903B2 true EP0645903B2 (de) 2005-02-09

Family

ID=9451348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402160A Expired - Lifetime EP0645903B2 (de) 1993-09-29 1994-09-28 Burstfüllstruktur in einer digitalen TDMA zellularen Funkanordnung, und Basisstation, die diese Struktur aufbaut

Country Status (11)

Country Link
US (1) US5583870A (de)
EP (1) EP0645903B2 (de)
JP (1) JP3758692B2 (de)
AT (1) ATE173367T1 (de)
AU (1) AU685151B2 (de)
CA (1) CA2133139C (de)
DE (1) DE69414514T3 (de)
DK (1) DK0645903T4 (de)
ES (1) ES2123737T5 (de)
FI (1) FI117461B (de)
FR (1) FR2710805B1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI99066C (fi) * 1995-01-31 1997-09-25 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä
FI98675B (fi) * 1995-02-17 1997-04-15 Nokia Telecommunications Oy Aikavälien allokoiminen matkaviestinjärjestelmässä
US5638372A (en) * 1995-05-08 1997-06-10 Telefonaktiebolaget Lm Ericsson Providing filler data to transmitters in a radio communication system
FR2739244B1 (fr) * 1995-09-26 1997-11-14 Alcatel Mobile Comm France Station de base pour systeme cellulaire de radiocommunications mobiles et systeme de synchronisation de telles stations de base
US5809421A (en) * 1996-01-02 1998-09-15 Motorola, Inc. Method for locating variable control channels by a mobile station in a radiotelephone system
FI101760B (fi) * 1996-08-09 1998-08-14 Nokia Telecommunications Oy Signalointimenetelmä ja digitaalinen radiojärjestelmä
WO1998021909A1 (en) * 1996-11-14 1998-05-22 Nokia Telecommunications Oy A method to arrange monitoring of base stations with discontinuous control channel transmissions
UA53669C2 (uk) * 1996-11-18 2003-02-17 Сіменс Акцієнгезельшафт Спосіб та система базової станції для конфігурування радіоінтерфейсу між мобільною станцією та базовою станцією мобільної радіосистеми пакетної передачі даних з часовим мультиплексуванням
FI104874B (fi) * 1997-03-27 2000-04-14 Nokia Networks Oy Menetelmä pakettiliikenteen ohjaamiseksi
SE9702271D0 (sv) * 1997-06-13 1997-06-13 Ericsson Telefon Ab L M Återanvändning av fysisk kontrollkanal i ett distribuerat cellulärt radiokommunikationssystem
GB2328838B (en) * 1997-08-29 2002-06-19 Motorola Ltd Method of measuring transmission power from a mobile telephone
FI113896B (fi) * 1997-11-11 2004-06-30 Nokia Corp Menetelmä matkaviestimen sijainnin hajautetuksi määrittelemiseksi
EP0930794B1 (de) * 1997-12-31 2003-05-21 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Ubertragung von Kanalinformation in einem Funkübertragungssystem
FI106836B (fi) * 1998-05-25 2001-04-12 Nokia Networks Oy Menetelmä kanavien käyttämiseksi aikajakomonikäyttöradiojärjestelmässä ja aikajakomonikäyttöradiojärjestelmä
US6463089B1 (en) 1998-08-19 2002-10-08 Interair Wireless, Inc. Hybrid spread spectrum method and system for wirelessly transmitting and receiving wideband digital data
DE19840507C2 (de) * 1998-09-04 2000-09-14 Siemens Ag Verfahren zur Vermessung der Übertragungseigenschaften der Funkkanäle eines Funk-Kommunikationssystems
US6463073B1 (en) 1998-12-21 2002-10-08 Nortel Networks Limited Slot structure and method of power control for use in a TDMA network
IL145548A0 (en) 1999-04-12 2002-06-30 Samsung Electronics Co Ltd Apparatus and method for gated transmission in a cdma communication system
DE69922342T2 (de) * 1999-04-19 2005-05-12 Alcatel TDMA-Mehrpunkt-zu-Punkt-System unter Verwendung einer besonderen Burststruktur und dazugehöriger Sender
US6480472B1 (en) 1999-07-21 2002-11-12 Qualcomm Incorporated Mobile station supervision of the forward dedicated control channel when in the discontinuous transmission mode
GB2368752B (en) * 2000-10-31 2004-06-30 Ip Access Ltd Cellular radio telecommunications systems
US6768747B1 (en) * 2000-11-30 2004-07-27 Arraycomm, Inc. Relative and absolute timing acquisition for a radio communications system
SE523070C2 (sv) * 2001-05-21 2004-03-23 Ericsson Telefon Ab L M En metod och apparat för skattning av länkkvalitet i ett mobilt kommunikationsnätverk
US20040100918A1 (en) * 2002-11-27 2004-05-27 Antti Toskala Method and system for forwarding a control information
EP1513357A1 (de) * 2003-09-03 2005-03-09 Nortel Networks Limited Eine Basisstation mit mehreren Verarbeitungseinheiten für ein drahtloses Kommunikationssystem
GB0327041D0 (en) * 2003-11-21 2003-12-24 Roke Manor Research Apparatus and methods
US20060176821A1 (en) * 2005-02-07 2006-08-10 Lucent Technologies Inc. Network bandwidth utilization verification method and apparatus through reciprocating and multiplicative message distribution
CN101371503B (zh) 2006-01-11 2013-09-25 高通股份有限公司 用于在广域网与局域对等网络之间共享带宽的方法和装置
US8811369B2 (en) 2006-01-11 2014-08-19 Qualcomm Incorporated Methods and apparatus for supporting multiple communications modes of operation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995119A (en) * 1975-05-30 1976-11-30 Gte Automatic Electric Laboratories Incorporated Digital time-division multiplexing system
DE3130176A1 (de) * 1981-07-30 1983-02-17 Siemens AG, 1000 Berlin und 8000 München Verfahren zur dynamischen zeitschlitzvergabe des organisationskanals zellularer mobilfunknetze in abhaengigkeit vom verkehrsaufkommen
JPS60239131A (ja) * 1984-05-14 1985-11-28 Nec Corp Ｔｄｍａ衛星通信システムにおける状態情報伝送方式
DE3527330A1 (de) * 1985-07-31 1987-02-05 Philips Patentverwaltung Digitales funkuebertragungssystem mit verbindungsbegleitenden organisationskanal im zeitmultiplexrahmen
JPH01188137A (ja) * 1988-01-22 1989-07-27 Fujitsu Ltd スロットリング型ｌａｎにおけるバースト通信方式
GB2232562A (en) * 1989-05-26 1990-12-12 Philips Electronic Associated Data transmission over a tdm duplex channel
FR2649560B1 (fr) * 1989-06-12 1994-08-05 Matra Communication Base de transmission pour un dispositif de communication radiotelephonique
IL94773A (en) * 1989-06-26 1994-11-11 Motorola Inc Synchronization and equivalence in a cellular AMDT system
SE500157C2 (sv) * 1989-09-13 1994-04-25 Ericsson Telefon Ab L M Förfarande för att välja basstation, radiokanal och tidslucka vid en mobilstation
GB2260877B (en) * 1991-10-26 1995-09-06 Motorola Ltd Method of access in trunked communications system
DE4136147A1 (de) * 1991-11-02 1993-05-06 Robert Bosch Gmbh, 7000 Stuttgart, De Synchronisationsverfahren fuer ein mobilfunktelefon
US5390216A (en) * 1991-11-02 1995-02-14 Robert Bosch Gmbh Synchronization method for a mobile radiotelephone
US5361258A (en) * 1993-10-22 1994-11-01 Bell Communications Research, Inc. Beacon detection system for sharing spectrum between wireless communications systems and fixed microwave systems

Also Published As

Publication number Publication date
ES2123737T5 (es) 2005-08-01
AU7421394A (en) 1995-04-13
EP0645903B1 (de) 1998-11-11
DE69414514T2 (de) 1999-04-15
US5583870A (en) 1996-12-10
FI117461B (fi) 2006-10-13
DK0645903T3 (da) 1999-07-26
EP0645903A1 (de) 1995-03-29
CA2133139A1 (fr) 1995-03-30
FI944445A0 (fi) 1994-09-26
AU685151B2 (en) 1998-01-15
FR2710805A1 (fr) 1995-04-07
JP3758692B2 (ja) 2006-03-22
CA2133139C (fr) 2004-05-25
DE69414514D1 (de) 1998-12-17
JPH07170580A (ja) 1995-07-04
FR2710805B1 (fr) 1995-11-10
DE69414514T3 (de) 2005-10-13
ES2123737T3 (es) 1999-01-16
FI944445A (fi) 1995-03-30
DK0645903T4 (da) 2005-06-13
ATE173367T1 (de) 1998-11-15

Similar Documents

Publication Publication Date Title
EP0645903B2 (de) Burstfüllstruktur in einer digitalen TDMA zellularen Funkanordnung, und Basisstation, die diese Struktur aufbaut
CA2128809C (fr) Systeme de radiocommunications cellulaire
EP0095959B1 (de) Funkverbindungssystem nach dem Frequenzsprungverfahren
EP3432487B1 (de) Steuerungsverfahren für ansteigende und abfallende bahnen eines optischen übertragungssystems
EP0593320B1 (de) Verfahren zur Übertragung einer Zeitverschiebungsnachricht an ein Fahrzeug das sich in einem zellularen Funkfernsprechnetz bewegt sowie Fahrzeug, Steuerungsvorrichtung, und Nachrichtenaustauschanordnung die dieses Verfahren verwenden
EP0955784B1 (de) Verfahren zum Weiterreichen zwischen zwei Relays einer Zelle eines digitalen zellularen Funkkommunikationssystems mittels eines gemeinsamen Übergangskanals.
CA2162707C (fr) Procede de transfert intercellulaire, ou handover, entre deux cellules d'un reseau cellulaire de radiocommunications mobiles
EP0775394B1 (de) Verfahren zur luftschnittstellenanpassung in einer mobilen funkkommunikationsanordnung
EP0589753B2 (de) Verfahren um zusammen mit einen Befehl zum Wechsel der Basisstation in einem zellularen System ein Laufzeitkorrektursignal an eine Mobilstation auszusenden
EP1505747B1 (de) Verfahren zur Zuweisung von Übertragskanälen an eine Mobilstation, insbesondere in Halb - Duplex - Betriebsart, in einem mobilen Telekommunikationsnetz in Paket - Modus
EP0637145A1 (de) Verfahren zur Bedeckung eines Schattengebiets in einer zellularen mobilen Radiokummunikationsanordnung, und Zwischenverstärker zur Durchführung dieses Verfahrens
FR2709893A1 (fr) Procédé de partage de canaux par vol d'intervalles de temps contrôlé dans un système de radiocommunications multiplexées, terminal et infrastructure correspondants.
FR2802380A1 (fr) Procede de controle d'un canal de communication partage par plusieurs stations, et station d'emission/reception pour la mise en oeuvre du procede
EP0204191A1 (de) Verfahren und Anordnung zur Satellitenübertragung mit TDMA
EP0650306B1 (de) Mitteilungstypanzeige zum Batteriesparen in einem mobilen Zellularfunkempfänger
EP0892572A1 (de) BCCH-Träger mit nicht konstanter Leistung und Verfahren zur Messung des empfangenen Signalpegels der Mobilstation
EP1201046B1 (de) Kommunikationssystem und verfahren für satelliten mit niedriger umlaufbahn mit weiterreichen einer kommunikation zwischen satelliten
CA2381255C (fr) Procede de radiocommunication entre une station de base et des terminaux mobiles, stations de base et terminaux mobiles pour la mise en oeuvre d'un tel procede
EP1179233B1 (de) Verfahren zur funksignalverbreitung von einer radiokommunikation basisstation, basisstation und mobile endgeräte dafür
EP1181786B1 (de) Verfahren zur funkübertragung zwischen einer basisstation und mobilfunkendgeräten
EP1049281A1 (de) TDMA-Mehrpunkt-zu-Punkt-System unter Verwendung einer besonderen Burststruktur und dazugehöriger Sender
FR2903851A1 (fr) Procede d'allocation de ressources radio dans un systeme de telephonie mobile directe.
EP1134954A1 (de) Telekommunikationssystem wobei jedes Endgerät mehrere Verbindungen aufweist
FR2697956A1 (fr) Procédé et poste de radio-communication entre ou avec des postes mobiles.
FR2694147A1 (fr) Procédé d'évaluation de canaux radioélectriques de transmission.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19950721

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19980414

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCATEL CIT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 173367

Country of ref document: AT

Date of ref document: 19981115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ALCATEL

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: CABINET ROLAND NITHARDT CONSEILS EN PROPRIETE INDU

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981119

REF Corresponds to:

Ref document number: 69414514

Country of ref document: DE

Date of ref document: 19981217

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2123737

Country of ref document: ES

Kind code of ref document: T3

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: ALCATEL

NLXE Nl: other communications concerning ep-patents (part 3 heading xe)

Free format text: PAT. BUL. 03/99 PAGE 358: CORR.: ALCATEL

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: MOTOROLA LIMITED

Effective date: 19990811

Opponent name: SIMOCO INTERNATIONAL LTD.

Effective date: 19990811

NLR1 Nl: opposition has been filed with the epo

Opponent name: MOTOROLA LIMITED

Opponent name: SIMOCO INTERNATIONAL LTD.

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20050209

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: MAINTIEN DU BREVET DONT L'ETENDUE A ETE MODIFIEE

REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

NLR2 Nl: decision of opposition

Effective date: 20050209

REG Reference to a national code

Ref country code: SE

Ref legal event code: RPEO

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
REG Reference to a national code

Ref country code: DK

Ref legal event code: T4

NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Date of ref document: 20050506

Kind code of ref document: T5

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: CABINET ROLAND NITHARDT CONSEILS EN PROPRIETE INDUSTRIELLE S.A.;Y-PARC RUE GALILEE;1400 YVERDON-LES-BAINS (CH)

REG Reference to a national code

Ref country code: FR

Ref legal event code: GC

Effective date: 20130704

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20130927

Year of fee payment: 20

Ref country code: DK

Payment date: 20130918

Year of fee payment: 20

Ref country code: DE

Payment date: 20130919

Year of fee payment: 20

Ref country code: NL

Payment date: 20130918

Year of fee payment: 20

Ref country code: SE

Payment date: 20130919

Year of fee payment: 20

Ref country code: CH

Payment date: 20130919

Year of fee payment: 20

Ref country code: AT

Payment date: 20130911

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20130919

Year of fee payment: 20

Ref country code: FR

Payment date: 20130919

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20131114 AND 20131120

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20130919

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20130930

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69414514

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Effective date: 20140928

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69414514

Country of ref document: DE

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20140928

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20140927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140930

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 173367

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140927

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140929